William ennis



W. 'ENNISQ Fire Pot for Stoves, &c.

2 Sheets- Sheet 1.

Patented May 23, 1865.

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- 2 Sheets-Sheet 2..

W. ENNIS.

YFire Pot for Stoves, 61.0.

'Patented May 23,1865.`

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Witnesses.'

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mw l 147 m gf- W6) UNITED STATES PATENT OFFICE..

WILLIAM ENNIS, 0F NEWT YORK, N. Y., ASSIGNOR TO HIMSELF AND OSBORNE MACDANIEL, OF SAME PLAGE.

FIRE-POT FOR STOVES, &LC.

Specification forming part of Letters Patent No. 47.895, dated May 23, 1S65f To @ZZ whom it may concern:

Be it known that I, WILLIAM ENNIs, of the city, county, and State of New York, have invented a new and improved mode of constructing iire-pots and retorts for stoves,ran ges, and furnaces, and generating steamior the promotion of combustion therein; and I do hereby declare that the following is a full and exact description thereof, reference being' had to the accompanying drawings which form a part of t ,is specification.

Figure l is a perspective View. ot' a irepot or lining for a heating stove or furnace for hmses. (See Sheet of Drawings N o. 1.) Fig. 8 is a vertical lateral section of a straight retort for a cook stove or range designed to be placed on one or more sides of a fire-chamber, which exhibits the sections or steam-chambers, formed by partitions in a single hollow casting, one of which is used for generating, and the others for the superheating and discharging, the steam into the fire. Fig. 9 is a vertical transverse section ot' the same, drawn through the line y y, Fig. 8. Fig. 2 is a perspective view of-a iirepot or lining for a cook stove or range.l Fig. 3 is a plan of the upper part of a round lire-pot. Fig. 4 is a plan ot' the lower part of a round iire-pot. Fig. 5 is the vertical section of a re-pot in the line x c, Fig. 3, showing the concave side and the ends of section B, and the line y y, Fig. 4, showing sectional divisions of sections U U, Fig. 4. Fig. 6 is a view of the concave side and ends of section A, Fig. 3, showing the steam-chamber m within and the waterlevel on the linee z. Fig. 7 is a plan of the upper part of a round fire-pot divided into three sections instead of into two, as in Fig. 3. (See Sheet of Drawings No. 2.)

The nature of my invention consists in a new mode of constructing tire-pots, retorts for stoves, ranges, and furnaces for generating steam directly in the pot or retort itself instead of employing an independent boiler for the purpose, the pot-retort being made of hollow cast-iron sections connected with pipes, and so formed and arranged that steam is made in the chamber or chambers of one or more sections and conveyed into the chamber or chambers of one or more other sections in which it is superheated, and thence in a superheated condition into the chamber or chambers of other sections, from which it issues in small jets through holes on the interior of the pot-retort into the iire, for the promotion of combustion, under the Letters Patent granted to William E.'Hagan, March 8, 1.864, or otherwise constructed by making the pot or retort of one or more cast-iron sections united by screw-bolts to form one piece, or in one hollow casting divided by partitions into chambers, which communicate with each other by pipes or openings, and have the same luses as when formed in separate sections of cautiron, the chambers in which are connected by means of pipes only, as described above, by means of which improvement I amenabled to furnish a regular and uninterrupted supply of steam to the tile in a stove, range, or furnace graduated in quantity as desired by the flow of water led by a feed-pipe into the steam chamber, thus securing higher utility and el'- fecting great economy in the application ot superheated steam for the promotion ot' combustion Iin stoves, ranges, and furnaces.

To enable others skilled in the arts to make and use my invention, I will proceed to describe its construction and operation.

Section A, Figs. 2, 3, and 6, is the steamgenerator,.the steamchamber m within being shown in Fig. 6, which is supplied with water by the feedpipe a, the iiow of the stream being graduated by a stop cock or valve or controlled by a feed-regulator, so that the water shall not rise above a certain level indicated by the line z z, Fig. 6, in the steam-chamber, the water being taken from a service pipe or tank.

Section B, Figs. 2, 3, and 5, is the superheater, into which the steam is conveyed directly from' the steam-generator A by the pipe b.

Sections C C, Figs. 2, 4, and 5, are the distributers, into which the superheated steam is conveyed by the pipes c c. The pipes c c are made long enough to rise nearly to the top of the chamber in the superheater, as ihown in Fig. 5, for the purpose of guarding against the passage of water into the distributers G G by any accidental overiow of the steamchamber m.

The material and mode of constructing the distributers G C may be modified advantageously, perhaps, in some cases, in which,

as in furnaces, a very intense tire is required, by forming them of fire-brick or soapstone, and instead ofmakin g them with chambers ini side, with small holes for the superheated steam to issue into the fire, have each section perforated with two or more holes, into which are conducted small pipes leading the superheated steam from the superheater into the tire. The pipes b and c are screwed into the castings at one of their ends, and at the other ends are tted tightly into their corresponding holes, and stut't'ed with red lead and iron tllings when the sections of the fire-pot are put together. Thus connected and locked together, the sections of the fire-pot or retort will remain firm in their place and form the pot-retort to be set in the stove or furnace.

The castings of the sections of the tire-pot may be made from one to three inches thick, according to their size and the use to which they are to be applied, and the cavities or chambers within them may be from a quarter to three-quarters of an inch wide, having greater substance on the inside than the outside, and the distributers may be made thicker than the steam generator and the superheater, allowing the substance of iron on the inside an inch or more in thickness, as a better protection against rthe action of an intense tire. The substance of iron left at the ends and top and bottom of the sections of the pot may be an inch, or more in thickness.

In some instances it may be advisable to have a smaller steam-generator than the segment of the circular pot A, and it may be divided into two parts, A A', Fig. 7, making section A the steam-generator, and section A an additional superheater. When this is done, the feed-pipe a may be branched, and provided with stop cocks e 6, Fig. 7 to admit water into each part, so that one or both parts may be used as steam-generators, as may be required.

In Figs. 8 and 9 is seen a straight retort, D, which is cast in one piece, anddesigned f ir the flrechamber of a cook stove or range. It is divided into sections or chambers by the partitions p p, of which G is the steamgenerator and E E supeiheating and distributing chambers, the water being conveyed by a pipe chamber or furnace, but may be adapted to and used in all kinds and forms of furnaces and lire-chambers, and retorts may be placed at the sides or in the body of a tire.

Having thus described the construction and operation of my invention, disclaiming the use of superheated steam to promote combustion and the division of a tire-pot into hollow segments or sections, of the prior use of which I am awa-re, and especially distinguishing my invention from the construction of tire-pots in hollow sections, one of which is employed as a water-leg or water-back, having pipes connected with an independent boiler for the heatin g of water and the generating of steam, which is led thence by a pipe into a superheating section of the pot and thence into a distributer, all of which devices and arrange-l ments have been previously employed by others.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The method of generating steam in the fire-pot retort itself, as and for the purpose herein described.

2. The construction of the steam generator A, combined with the feed-pipe a, leading into the steam-chamber m, and the escape-pipe b, leading into the superheater B, as and for the purpose herein described. Y 3. The combination of the steam-generator A, the superheater B, and the distributers C C, connected with the pipes 61,11, and c, as and for the purpose herein described. p

4. The construction of a retort dividedby partitions into chambers or sections formed of one or more pieces, as and for the purpose herein described.

y WILLIAM ENNIS.

Witnessed by- A. D. PLATT, J. M. STAPLEs. 

